ZOOLOGY 



DESCRIPTIVE AND PRACTICAL 



BY 



BUEL P. COLTON, A.M. 



AUTHOR OF " PHYSIOLOGY, EXPERIMENTAL AND DESCRIPTIVE," " PHYSIOLOGY 



ILLUSTRATED BY EXPERIMENT," " ELEMENTARY PHYSIOLOGY," 



"PRACTICAL ZOOLOGY"; , AND PROFESSOR OF NATURAL 



SCIENCE IN THE ILLINOIS STATE NORMAL 



UNIVERSITY 



I 

 DESCRIPTIVE 



^' Of THE 



UNIVERSITY 



OF 



BOSTON, U.S.A. 



D. C. HEATH & CO., PUBLISHERS 

 1907 



